25353121662 has 48 divisors (see below), whose sum is σ = 62145038592. Its totient is φ = 7682762520.

The previous prime is 25353121657. The next prime is 25353121663. The reversal of 25353121662 is 26612135352.

25353121662 is a `hidden beast` number, since 2 + 53 + 531 + 2 + 16 + 62 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25353121663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2365878 + ... + 2376569.

It is an arithmetic number, because the mean of its divisors is an integer number (1294688304).

Almost surely, 2^25353121662 is an apocalyptic number.

25353121662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25353121662 is an abundant number, since it is smaller than the sum of its proper divisors (36791916930).

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

25353121662 is a wasteful number, since it uses less digits than its factorization.

25353121662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742475 (or 4742463 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The spelling of 25353121662 in words is "twenty-five billion, three hundred fifty-three million, one hundred twenty-one thousand, six hundred sixty-two".