25642224652 has 36 divisors (see below), whose sum is σ = 52225636680. Its totient is φ = 10969932160.

The previous prime is 25642224581. The next prime is 25642224689.

25642224652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×25642224652² (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 11 ways as a sum of consecutive naturals, for example, 1550002 + ... + 1566457.

It is an arithmetic number, because the mean of its divisors is an integer number (1450712130).

Almost surely, 2^25642224652 is an apocalyptic number.

25642224652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25642224652 is an abundant number, since it is smaller than the sum of its proper divisors (26583412028).

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

25642224652 is a wasteful number, since it uses less digits than its factorization.

25642224652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116502 (or 3116489 counting only the distinct ones).

The product of its digits is 460800, while the sum is 40.

The spelling of 25642224652 in words is "twenty-five billion, six hundred forty-two million, two hundred twenty-four thousand, six hundred fifty-two".