25401492480 has 704 divisors, whose sum is σ = 105974991360. Its totient is φ = 5039456256.

The previous prime is 25401492443. The next prime is 25401492481. The reversal of 25401492480 is 8429410452.

It is a super-2 number, since 2×25401492480² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (25401492481) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23761386 + ... + 23762454.

Almost surely, 2^25401492480 is an apocalyptic number.

25401492480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25401492480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52987495680).

25401492480 is an abundant number, since it is smaller than the sum of its proper divisors (80573498880).

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

25401492480 is a wasteful number, since it uses less digits than its factorization.

25401492480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134 (or 1116 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 25401492480 in words is "twenty-five billion, four hundred one million, four hundred ninety-two thousand, four hundred eighty".