151992225 has 144 divisors (see below), whose sum is σ = 351596544. Its totient is φ = 60912000.

The previous prime is 151992209. The next prime is 151992241. The reversal of 151992225 is 522299151.

It is a happy number.

151992225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (151992209) and next prime (151992241).

It is not a de Polignac number, because 151992225 - 2⁴ = 151992209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 151992225.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 536934 + ... + 537216.

Almost surely, 2^151992225 is an apocalyptic number.

151992225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

151992225 is an abundant number, since it is smaller than the sum of its proper divisors (199604319).

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

151992225 is a wasteful number, since it uses less digits than its factorization.

151992225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 340 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 151992225 is about 12328.5126840183. The cubic root of 151992225 is about 533.6712301055.

It can be divided in two parts, 15199 and 2225, that added together give a square (17424 = 132²).

The spelling of 151992225 in words is "one hundred fifty-one million, nine hundred ninety-two thousand, two hundred twenty-five".