25091055 has 48 divisors (see below), whose sum is σ = 47882016. Its totient is φ = 12053760.

The previous prime is 25091047. The next prime is 25091081. The reversal of 25091055 is 55019052.

It is not a de Polignac number, because 25091055 - 2³ = 25091047 is a prime.

It is a super-2 number, since 2×25091055² = 1259122082026050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85489 + ... + 85781.

It is an arithmetic number, because the mean of its divisors is an integer number (997542).

Almost surely, 2^25091055 is an apocalyptic number.

25091055 is a deficient number, since it is larger than the sum of its proper divisors (22790961).

25091055 is a wasteful number, since it uses less digits than its factorization.

25091055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 25091055 is about 5009.0972240515. The cubic root of 25091055 is about 292.7563389502.

The spelling of 25091055 in words is "twenty-five million, ninety-one thousand, fifty-five".