25125261 has 16 divisors (see below), whose sum is σ = 38361600. Its totient is φ = 14329008.

The previous prime is 25125259. The next prime is 25125293. The reversal of 25125261 is 16252152.

It is a happy number.

It is not a de Polignac number, because 25125261 - 2¹ = 25125259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25125461) 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, 14710 + ... + 16328.

It is an arithmetic number, because the mean of its divisors is an integer number (2397600).

Almost surely, 2^25125261 is an apocalyptic number.

25125261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25125261 is a deficient number, since it is larger than the sum of its proper divisors (13236339).

25125261 is a wasteful number, since it uses less digits than its factorization.

25125261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368.

The product of its digits is 1200, while the sum is 24.

The square root of 25125261 is about 5012.5104488669. The cubic root of 25125261 is about 292.8893143094.

The spelling of 25125261 in words is "twenty-five million, one hundred twenty-five thousand, two hundred sixty-one".