25213311528 has 32 divisors (see below), whose sum is σ = 65773857600. Its totient is φ = 8039026688.

The previous prime is 25213311503. The next prime is 25213311533. The reversal of 25213311528 is 82511331252.

It is a super-2 number, since 2×25213311528² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22837593 + ... + 22838696.

It is an arithmetic number, because the mean of its divisors is an integer number (2055433050).

Almost surely, 2^25213311528 is an apocalyptic number.

It is an amenable number.

25213311528 is an abundant number, since it is smaller than the sum of its proper divisors (40560546072).

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

25213311528 is a wasteful number, since it uses less digits than its factorization.

25213311528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45676321 (or 45676317 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The spelling of 25213311528 in words is "twenty-five billion, two hundred thirteen million, three hundred eleven thousand, five hundred twenty-eight".