25541487 has 24 divisors (see below), whose sum is σ = 38722320. Its totient is φ = 16822080.

The previous prime is 25541471. The next prime is 25541501. The reversal of 25541487 is 78414552.

It is not a de Polignac number, because 25541487 - 2⁴ = 25541471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25541407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21037 + ... + 22217.

It is an arithmetic number, because the mean of its divisors is an integer number (1613430).

Almost surely, 2^25541487 is an apocalyptic number.

25541487 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

25541487 is a deficient number, since it is larger than the sum of its proper divisors (13180833).

25541487 is an equidigital number, since it uses as much as digits as its factorization.

25541487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285 (or 1273 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 25541487 is about 5053.8586248529. The cubic root of 25541487 is about 294.4978030377.

The spelling of 25541487 in words is "twenty-five million, five hundred forty-one thousand, four hundred eighty-seven".