25105213 has 32 divisors (see below), whose sum is σ = 32716800. Its totient is φ = 18760896.

The previous prime is 25105193. The next prime is 25105217. The reversal of 25105213 is 31250152.

It is not a de Polignac number, because 25105213 - 2⁵ = 25105181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25105217) 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, 88570 + ... + 88852.

It is an arithmetic number, because the mean of its divisors is an integer number (1022400).

Almost surely, 2^25105213 is an apocalyptic number.

25105213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25105213 is a deficient number, since it is larger than the sum of its proper divisors (7611587).

25105213 is a wasteful number, since it uses less digits than its factorization.

25105213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 25105213 is about 5010.5102534572. The cubic root of 25105213 is about 292.8113926323.

Adding to 25105213 its reverse (31250152), we get a palindrome (56355365).

The spelling of 25105213 in words is "twenty-five million, one hundred five thousand, two hundred thirteen".