25061399 has 16 divisors (see below), whose sum is σ = 29045760. Its totient is φ = 21562200.

The previous prime is 25061339. The next prime is 25061401. The reversal of 25061399 is 99316052.

It is not a de Polignac number, because 25061399 - 2⁸ = 25061143 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25061339) 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, 24794 + ... + 25784.

It is an arithmetic number, because the mean of its divisors is an integer number (1815360).

Almost surely, 2^25061399 is an apocalyptic number.

25061399 is a deficient number, since it is larger than the sum of its proper divisors (3984361).

25061399 is an equidigital number, since it uses as much as digits as its factorization.

25061399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043 (or 1021 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 25061399 is about 5006.1361347850. The cubic root of 25061399 is about 292.6409538093.

The spelling of 25061399 in words is "twenty-five million, sixty-one thousand, three hundred ninety-nine".