151973225 has 12 divisors (see below), whose sum is σ = 191030556. Its totient is φ = 119911680.

The previous prime is 151973209. The next prime is 151973233. The reversal of 151973225 is 522379151.

It can be written as a sum of positive squares in 6 ways, for example, as 1371241 + 150601984 = 1171^2 + 12272^2 .

It is not a de Polignac number, because 151973225 - 2⁴ = 151973209 is a prime.

It is a super-2 number, since 2×151973225² = 46191722233801250, which 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 11 ways as a sum of consecutive naturals, for example, 39812 + ... + 43461.

It is an arithmetic number, because the mean of its divisors is an integer number (15919213).

Almost surely, 2^151973225 is an apocalyptic number.

It is an amenable number.

151973225 is a deficient number, since it is larger than the sum of its proper divisors (39057331).

151973225 is an equidigital number, since it uses as much as digits as its factorization.

151973225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83356 (or 83351 counting only the distinct ones).

The product of its digits is 18900, while the sum is 35.

The square root of 151973225 is about 12327.7420884767. The cubic root of 151973225 is about 533.6489917401.

The spelling of 151973225 in words is "one hundred fifty-one million, nine hundred seventy-three thousand, two hundred twenty-five".