25070431 has 4 divisors (see below), whose sum is σ = 25543512. Its totient is φ = 24597352.

The previous prime is 25070429. The next prime is 25070447. The reversal of 25070431 is 13407052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25070431 - 2¹ = 25070429 is a prime.

It is a super-2 number, since 2×25070431² = 1257053021051522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25070401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236461 + ... + 236566.

It is an arithmetic number, because the mean of its divisors is an integer number (6385878).

Almost surely, 2^25070431 is an apocalyptic number.

25070431 is a deficient number, since it is larger than the sum of its proper divisors (473081).

25070431 is an equidigital number, since it uses as much as digits as its factorization.

25070431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473080.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 25070431 is about 5007.0381464495. The cubic root of 25070431 is about 292.6761050212.

Adding to 25070431 its reverse (13407052), we get a palindrome (38477483).

The spelling of 25070431 in words is "twenty-five million, seventy thousand, four hundred thirty-one".