25131345 has 32 divisors (see below), whose sum is σ = 41558400. Its totient is φ = 12962304.

The previous prime is 25131343. The next prime is 25131347. The reversal of 25131345 is 54313152.

It is an interprime number because it is at equal distance from previous prime (25131343) and next prime (25131347).

It is not a de Polignac number, because 25131345 - 2¹ = 25131343 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25131343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64411 + ... + 64799.

It is an arithmetic number, because the mean of its divisors is an integer number (1298700).

Almost surely, 2^25131345 is an apocalyptic number.

It is an amenable number.

25131345 is a deficient number, since it is larger than the sum of its proper divisors (16427055).

25131345 is a wasteful number, since it uses less digits than its factorization.

25131345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529.

The product of its digits is 1800, while the sum is 24.

The square root of 25131345 is about 5013.1172936607. The cubic root of 25131345 is about 292.9129531322.

Adding to 25131345 its reverse (54313152), we get a palindrome (79444497).

The spelling of 25131345 in words is "twenty-five million, one hundred thirty-one thousand, three hundred forty-five".