148891798225 has 27 divisors (see below), whose sum is σ = 185987463507. Its totient is φ = 118241383680.

The previous prime is 148891798213. The next prime is 148891798273. The reversal of 148891798225 is 522897198841.

The square root of 148891798225 is 385865.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 54013013649 + 94878784576 = 232407^2 + 308024^2 .

It is not a de Polignac number, because 148891798225 - 2⁹ = 148891797713 is a prime.

It is a super-2 number, since 2×148891798225² (a number of 23 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 26 ways as a sum of consecutive naturals, for example, 441815257 + ... + 441815593.

Almost surely, 2^148891798225 is an apocalyptic number.

148891798225 is the 385865-th square number.

148891798225 is the 192933-rd centered octagonal number.

It is an amenable number.

148891798225 is a deficient number, since it is larger than the sum of its proper divisors (37095665282).

148891798225 is an frugal number, since it uses more digits than its factorization.

148891798225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142 (or 571 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 64.

Multiplying 148891798225 by its sum of digits (64), we get a square (9529075086400 = 3086920²).

The spelling of 148891798225 in words is "one hundred forty-eight billion, eight hundred ninety-one million, seven hundred ninety-eight thousand, two hundred twenty-five".