25013381 has 2 divisors, whose sum is σ = 25013382. Its totient is φ = 25013380.

The previous prime is 25013363. The next prime is 25013411. The reversal of 25013381 is 18331052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24700900 + 312481 = 4970^2 + 559^2 .

It is a cyclic number.

It is not a de Polignac number, because 25013381 - 2¹⁰ = 25012357 is a prime.

It is a super-2 number, since 2×25013381² = 1251338458102322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25013081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12506690 + 12506691.

It is an arithmetic number, because the mean of its divisors is an integer number (12506691).

Almost surely, 2^25013381 is an apocalyptic number.

It is an amenable number.

25013381 is a deficient number, since it is larger than the sum of its proper divisors (1).

25013381 is an equidigital number, since it uses as much as digits as its factorization.

25013381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 25013381 is about 5001.3379209967. The cubic root of 25013381 is about 292.4539328917.

It can be divided in two parts, 250 and 13381, that added together give a palindrome (13631).

The spelling of 25013381 in words is "twenty-five million, thirteen thousand, three hundred eighty-one".