149765625 has 64 divisors (see below), whose sum is σ = 281249280. Its totient is φ = 78750000.

The previous prime is 149765621. The next prime is 149765633. The reversal of 149765625 is 526567941.

149765625 is a `hidden beast` number, since 14 + 9 + 7 + 6 + 5 + 625 = 666.

It is not a de Polignac number, because 149765625 - 2² = 149765621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149765621) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2109340 + ... + 2109410.

It is an arithmetic number, because the mean of its divisors is an integer number (4394520).

Almost surely, 2^149765625 is an apocalyptic number.

149765625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149765625 is a deficient number, since it is larger than the sum of its proper divisors (131483655).

149765625 is an frugal number, since it uses more digits than its factorization.

149765625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 79 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 149765625 is about 12237.8766540605. The cubic root of 149765625 is about 531.0524063314.

The spelling of 149765625 in words is "one hundred forty-nine million, seven hundred sixty-five thousand, six hundred twenty-five".