25245212502 has 8 divisors (see below), whose sum is σ = 50490425016. Its totient is φ = 8415070832.

The previous prime is 25245212491. The next prime is 25245212561. The reversal of 25245212502 is 20521254252.

It is a sphenic number, since it is the product of 3 distinct primes.

25245212502 is an admirable number.

It is a super-2 number, since 2×25245212502² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25245212502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2103767703 + ... + 2103767714.

It is an arithmetic number, because the mean of its divisors is an integer number (6311303127).

Almost surely, 2^25245212502 is an apocalyptic number.

25245212502 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25245212502 is a wasteful number, since it uses less digits than its factorization.

25245212502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4207535422.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 25245212502 its reverse (20521254252), we get a palindrome (45766466754).

The spelling of 25245212502 in words is "twenty-five billion, two hundred forty-five million, two hundred twelve thousand, five hundred two".