25251051 has 16 divisors (see below), whose sum is σ = 38548224. Its totient is φ = 14402784.

The previous prime is 25251047. The next prime is 25251053. The reversal of 25251051 is 15015252.

It is not a de Polignac number, because 25251051 - 2² = 25251047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (25251053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20680 + ... + 21866.

It is an arithmetic number, because the mean of its divisors is an integer number (2409264).

Almost surely, 2^25251051 is an apocalyptic number.

25251051 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25251051 is a deficient number, since it is larger than the sum of its proper divisors (13297173).

25251051 is a wasteful number, since it uses less digits than its factorization.

25251051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 25251051 is about 5025.0423878809. The cubic root of 25251051 is about 293.3772857980.

The spelling of 25251051 in words is "twenty-five million, two hundred fifty-one thousand, fifty-one".