2503435725 has 324 divisors, whose sum is σ = 5986334484. Its totient is φ = 992839680.

The previous prime is 2503435717. The next prime is 2503435729. The reversal of 2503435725 is 5275343052.

2503435725 is a `hidden beast` number, since 2 + 50 + 34 + 3 + 572 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 133888041 + 2369547684 = 11571^2 + 48678^2 .

It is not a de Polignac number, because 2503435725 - 2³ = 2503435717 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2503435725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2503435729) by changing a digit.

It is a polite number, since it can be written in 323 ways as a sum of consecutive naturals, for example, 67660407 + ... + 67660443.

It is an arithmetic number, because the mean of its divisors is an integer number (18476341).

Almost surely, 2^2503435725 is an apocalyptic number.

2503435725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2503435725 is an abundant number, since it is smaller than the sum of its proper divisors (3482898759).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2503435725 is a wasteful number, since it uses less digits than its factorization.

2503435725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 36.

The square root of 2503435725 is about 50034.3454538980. The cubic root of 2503435725 is about 1357.8302565320.

Adding to 2503435725 its reverse (5275343052), we get a palindrome (7778778777).

The spelling of 2503435725 in words is "two billion, five hundred three million, four hundred thirty-five thousand, seven hundred twenty-five".