161025951 has 16 divisors (see below), whose sum is σ = 223538400. Its totient is φ = 102979968.

The previous prime is 161025923. The next prime is 161025973. The reversal of 161025951 is 159520161.

It is not a de Polignac number, because 161025951 - 2¹¹ = 161023903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161025251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7765 + ... + 19553.

It is an arithmetic number, because the mean of its divisors is an integer number (13971150).

Almost surely, 2^161025951 is an apocalyptic number.

161025951 is a deficient number, since it is larger than the sum of its proper divisors (62512449).

161025951 is a wasteful number, since it uses less digits than its factorization.

161025951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11978.

The product of its (nonzero) digits is 2700, while the sum is 30.

The square root of 161025951 is about 12689.6001119027. The cubic root of 161025951 is about 544.0414100812.

The spelling of 161025951 in words is "one hundred sixty-one million, twenty-five thousand, nine hundred fifty-one".