25229777275 has 24 divisors (see below), whose sum is σ = 31614789024. Its totient is φ = 19971264000.

The previous prime is 25229777269. The next prime is 25229777281. The reversal of 25229777275 is 57277792252.

It is an interprime number because it is at equal distance from previous prime (25229777269) and next prime (25229777281).

It is not a de Polignac number, because 25229777275 - 2¹⁹ = 25229252987 is a prime.

It is a super-2 number, since 2×25229777275² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7151562 + ... + 7155088.

It is an arithmetic number, because the mean of its divisors is an integer number (1317282876).

Almost surely, 2^25229777275 is an apocalyptic number.

25229777275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25229777275 is a deficient number, since it is larger than the sum of its proper divisors (6385011749).

25229777275 is a wasteful number, since it uses less digits than its factorization.

25229777275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6471 (or 6466 counting only the distinct ones).

The product of its digits is 8643600, while the sum is 55.

The spelling of 25229777275 in words is "twenty-five billion, two hundred twenty-nine million, seven hundred seventy-seven thousand, two hundred seventy-five".