25354402000 has 40 divisors (see below), whose sum is σ = 61306948872. Its totient is φ = 10141760000.

The previous prime is 25354401977. The next prime is 25354402013. The reversal of 25354402000 is 20445352.

It can be written as a sum of positive squares in 4 ways, for example, as 287913024 + 25066488976 = 16968^2 + 158324^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

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, 6336601 + ... + 6340600.

Almost surely, 2^25354402000 is an apocalyptic number.

25354402000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25354402000 is an abundant number, since it is smaller than the sum of its proper divisors (35952546872).

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

25354402000 is a wasteful number, since it uses less digits than its factorization.

25354402000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12677224 (or 12677208 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 25354402000 its reverse (20445352), we get a palindrome (25374847352).

The spelling of 25354402000 in words is "twenty-five billion, three hundred fifty-four million, four hundred two thousand".