25969161351 has 16 divisors (see below), whose sum is σ = 39834126848. Its totient is φ = 14741244000.

The previous prime is 25969161329. The next prime is 25969161389. The reversal of 25969161351 is 15316196952.

It is not a de Polignac number, because 25969161351 - 2¹³ = 25969153159 is a prime.

It is the 161150-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25969161351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25969161301) by changing a digit.

It is a nontrivial repunit in base 161149.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4091620 + ... + 4097961.

It is an arithmetic number, because the mean of its divisors is an integer number (2489632928).

Almost surely, 2^25969161351 is an apocalyptic number.

25969161351 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25969161351 is a deficient number, since it is larger than the sum of its proper divisors (13864965497).

25969161351 is a wasteful number, since it uses less digits than its factorization.

25969161351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8189742.

The product of its digits is 437400, while the sum is 48.

The spelling of 25969161351 in words is "twenty-five billion, nine hundred sixty-nine million, one hundred sixty-one thousand, three hundred fifty-one".