25351015564 has 24 divisors (see below), whose sum is σ = 52906468608. Its totient is φ = 10392341520.

The previous prime is 25351015531. The next prime is 25351015567. The reversal of 25351015564 is 46551015352.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25351015567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19681822 + ... + 19683109.

It is an arithmetic number, because the mean of its divisors is an integer number (2204436192).

Almost surely, 2^25351015564 is an apocalyptic number.

It is an amenable number.

25351015564 is an abundant number, since it is smaller than the sum of its proper divisors (27555453044).

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

25351015564 is a wasteful number, since it uses less digits than its factorization.

25351015564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39364965 (or 39364963 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 25351015564 in words is "twenty-five billion, three hundred fifty-one million, fifteen thousand, five hundred sixty-four".