154228725 has 72 divisors (see below), whose sum is σ = 329651520. Its totient is φ = 70489440.

The previous prime is 154228703. The next prime is 154228747. The reversal of 154228725 is 527822451.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (154228703) and next prime (154228747).

It is not a de Polignac number, because 154228725 - 2⁵ = 154228693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154228725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 30744 + ... + 35406.

Almost surely, 2^154228725 is an apocalyptic number.

154228725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

154228725 is an abundant number, since it is smaller than the sum of its proper divisors (175422795).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154228725 is a wasteful number, since it uses less digits than its factorization.

154228725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696 (or 4678 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 154228725 is about 12418.8858195895. The cubic root of 154228725 is about 536.2760758018.

The spelling of 154228725 in words is "one hundred fifty-four million, two hundred twenty-eight thousand, seven hundred twenty-five".