25891480 has 32 divisors (see below), whose sum is σ = 59131440. Its totient is φ = 10200960.

The previous prime is 25891457. The next prime is 25891487. The reversal of 25891480 is 8419852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25891487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2151 + ... + 7510.

Almost surely, 2^25891480 is an apocalyptic number.

25891480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25891480 is an abundant number, since it is smaller than the sum of its proper divisors (33239960).

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

25891480 is a wasteful number, since it uses less digits than its factorization.

25891480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9739 (or 9735 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 25891480 is about 5088.3671251198. The cubic root of 25891480 is about 295.8368653064.

The spelling of 25891480 in words is "twenty-five million, eight hundred ninety-one thousand, four hundred eighty".