149207991025 has 6 divisors (see below), whose sum is σ = 185017908902. Its totient is φ = 119366392800.

The previous prime is 149207991019. The next prime is 149207991043. The reversal of 149207991025 is 520199702941.

It can be written as a sum of positive squares in 3 ways, for example, as 600054016 + 148607937009 = 24496^2 + 385497^2 .

It is not a de Polignac number, because 149207991025 - 2¹¹ = 149207988977 is a prime.

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 149207991025.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2984159796 + ... + 2984159845.

Almost surely, 2^149207991025 is an apocalyptic number.

It is an amenable number.

149207991025 is a deficient number, since it is larger than the sum of its proper divisors (35809917877).

149207991025 is an equidigital number, since it uses as much as digits as its factorization.

149207991025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5968319651 (or 5968319646 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 49.

The spelling of 149207991025 in words is "one hundred forty-nine billion, two hundred seven million, nine hundred ninety-one thousand, twenty-five".