25445251125 has 48 divisors (see below), whose sum is σ = 52422080256. Its totient is φ = 11632111200.

The previous prime is 25445251123. The next prime is 25445251129. The reversal of 25445251125 is 52115254452.

25445251125 is a `hidden beast` number, since 2 + 5 + 4 + 4 + 525 + 1 + 125 = 666.

It is not a de Polignac number, because 25445251125 - 2¹ = 25445251123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25445251125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25445251123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1607697 + ... + 1623446.

It is an arithmetic number, because the mean of its divisors is an integer number (1092126672).

Almost surely, 2^25445251125 is an apocalyptic number.

25445251125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25445251125 is an abundant number, since it is smaller than the sum of its proper divisors (26976829131).

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

25445251125 is a wasteful number, since it uses less digits than its factorization.

25445251125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231171 (or 3231158 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

The spelling of 25445251125 in words is "twenty-five billion, four hundred forty-five million, two hundred fifty-one thousand, one hundred twenty-five".