25555494 has 16 divisors (see below), whose sum is σ = 53801280. Its totient is φ = 8070120.

The previous prime is 25555489. The next prime is 25555499. The reversal of 25555494 is 49455552.

It is an interprime number because it is at equal distance from previous prime (25555489) and next prime (25555499).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25555499) 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, 111972 + ... + 112199.

It is an arithmetic number, because the mean of its divisors is an integer number (3362580).

Almost surely, 2^25555494 is an apocalyptic number.

25555494 is an abundant number, since it is smaller than the sum of its proper divisors (28245786).

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

25555494 is a wasteful number, since it uses less digits than its factorization.

25555494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224195.

The product of its digits is 180000, while the sum is 39.

The square root of 25555494 is about 5055.2442077510. The cubic root of 25555494 is about 294.5516275847.

The spelling of 25555494 in words is "twenty-five million, five hundred fifty-five thousand, four hundred ninety-four".