25251973 has 2 divisors, whose sum is σ = 25251974. Its totient is φ = 25251972.

The previous prime is 25251943. The next prime is 25251983. The reversal of 25251973 is 37915252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24820324 + 431649 = 4982^2 + 657^2 .

It is a cyclic number.

It is not a de Polignac number, because 25251973 - 2¹³ = 25243781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25251943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12625986 + 12625987.

It is an arithmetic number, because the mean of its divisors is an integer number (12625987).

Almost surely, 2^25251973 is an apocalyptic number.

It is an amenable number.

25251973 is a deficient number, since it is larger than the sum of its proper divisors (1).

25251973 is an equidigital number, since it uses as much as digits as its factorization.

25251973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 34.

The square root of 25251973 is about 5025.1341275632. The cubic root of 25251973 is about 293.3808564819.

It can be divided in two parts, 252 and 51973, that added together give a palindrome (52225).

The spelling of 25251973 in words is "twenty-five million, two hundred fifty-one thousand, nine hundred seventy-three".