25049520 has 80 divisors (see below), whose sum is σ = 86289120. Its totient is φ = 6679296.

The previous prime is 25049503. The next prime is 25049537. The reversal of 25049520 is 2594052.

It is an interprime number because it is at equal distance from previous prime (25049503) and next prime (25049537).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3639 + ... + 7958.

It is an arithmetic number, because the mean of its divisors is an integer number (1078614).

Almost surely, 2^25049520 is an apocalyptic number.

25049520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25049520 is an abundant number, since it is smaller than the sum of its proper divisors (61239600).

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

25049520 is a wasteful number, since it uses less digits than its factorization.

25049520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11619 (or 11607 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 25049520 is about 5004.9495501953. The cubic root of 25049520 is about 292.5947096327.

It can be divided in two parts, 250 and 49520, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 25049520 in words is "twenty-five million, forty-nine thousand, five hundred twenty".