25278252783 has 32 divisors (see below), whose sum is σ = 40676313600. Its totient is φ = 13640679936.

The previous prime is 25278252739. The next prime is 25278252803. The reversal of 25278252783 is 38725287252.

It is a happy number.

It is not a de Polignac number, because 25278252783 - 2⁶ = 25278252719 is a prime.

It is a super-2 number, since 2×25278252783² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25278252583) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23683 + ... + 226091.

It is an arithmetic number, because the mean of its divisors is an integer number (1271134800).

Almost surely, 2^25278252783 is an apocalyptic number.

25278252783 is a deficient number, since it is larger than the sum of its proper divisors (15398060817).

25278252783 is a wasteful number, since it uses less digits than its factorization.

25278252783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202751.

The product of its digits is 3763200, while the sum is 51.

The spelling of 25278252783 in words is "twenty-five billion, two hundred seventy-eight million, two hundred fifty-two thousand, seven hundred eighty-three".