25233107440 has 20 divisors (see below), whose sum is σ = 58666974984. Its totient is φ = 10093242944.

The previous prime is 25233107423. The next prime is 25233107441. The reversal of 25233107440 is 4470133252.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×25233107440² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25233107441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157706842 + ... + 157707001.

Almost surely, 2^25233107440 is an apocalyptic number.

25233107440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25233107440 is an abundant number, since it is smaller than the sum of its proper divisors (33433867544).

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

25233107440 is a wasteful number, since it uses less digits than its factorization.

25233107440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315413856 (or 315413850 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The spelling of 25233107440 in words is "twenty-five billion, two hundred thirty-three million, one hundred seven thousand, four hundred forty".