25215098512 has 20 divisors (see below), whose sum is σ = 51425530480. Its totient is φ = 11943993888.

The previous prime is 25215098473. The next prime is 25215098527. The reversal of 25215098512 is 21589051252.

It is a super-2 number, since 2×25215098512² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41471898 + ... + 41472505.

It is an arithmetic number, because the mean of its divisors is an integer number (2571276524).

Almost surely, 2^25215098512 is an apocalyptic number.

It is an amenable number.

25215098512 is an abundant number, since it is smaller than the sum of its proper divisors (26210431968).

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

25215098512 is a wasteful number, since it uses less digits than its factorization.

25215098512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82944430 (or 82944424 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 40.

The spelling of 25215098512 in words is "twenty-five billion, two hundred fifteen million, ninety-eight thousand, five hundred twelve".