25513488 has 320 divisors, whose sum is σ = 99993600. Its totient is φ = 6013440.

The previous prime is 25513483. The next prime is 25513513. The reversal of 25513488 is 88431552.

It is a happy number.

It is a super-2 number, since 2×25513488² = 1301876139852288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25513483) 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, 432403 + ... + 432461.

It is an arithmetic number, because the mean of its divisors is an integer number (312480).

Almost surely, 2^25513488 is an apocalyptic number.

25513488 is a gapful number since it is divisible by the number (28) 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 25513488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49996800).

25513488 is an abundant number, since it is smaller than the sum of its proper divisors (74480112).

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

25513488 is a wasteful number, since it uses less digits than its factorization.

25513488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 95 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 25513488 is about 5051.0878036320. The cubic root of 25513488 is about 294.3901525731.

The spelling of 25513488 in words is "twenty-five million, five hundred thirteen thousand, four hundred eighty-eight".