25451345 has 12 divisors (see below), whose sum is σ = 30916764. Its totient is φ = 20113920.

The previous prime is 25451339. The next prime is 25451347. The reversal of 25451345 is 54315452.

It can be written as a sum of positive squares in 6 ways, for example, as 760384 + 24690961 = 872^2 + 4969^2 .

It is not a de Polignac number, because 25451345 - 2⁶ = 25451281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25451347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46775 + ... + 47315.

It is an arithmetic number, because the mean of its divisors is an integer number (2576397).

Almost surely, 2^25451345 is an apocalyptic number.

It is an amenable number.

25451345 is a deficient number, since it is larger than the sum of its proper divisors (5465419).

25451345 is an frugal number, since it uses more digits than its factorization.

25451345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 643 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 25451345 is about 5044.9326060910. The cubic root of 25451345 is about 294.1509436696.

Adding to 25451345 its reverse (54315452), we get a palindrome (79766797).

It can be divided in two parts, 25 and 451345, that multiplied together give a triangular number (11283625 = T₄₇₅₀).

The spelling of 25451345 in words is "twenty-five million, four hundred fifty-one thousand, three hundred forty-five".