155251625 has 16 divisors (see below), whose sum is σ = 198486288. Its totient is φ = 121168000.

The previous prime is 155251619. The next prime is 155251631. The reversal of 155251625 is 526152551.

It is an interprime number because it is at equal distance from previous prime (155251619) and next prime (155251631).

It can be written as a sum of positive squares in 8 ways, for example, as 99420841 + 55830784 = 9971^2 + 7472^2 .

It is not a de Polignac number, because 155251625 - 2⁴ = 155251609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155251591 and 155251600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10022 + ... + 20271.

It is an arithmetic number, because the mean of its divisors is an integer number (12405393).

Almost surely, 2^155251625 is an apocalyptic number.

It is an amenable number.

155251625 is a deficient number, since it is larger than the sum of its proper divisors (43234663).

155251625 is an equidigital number, since it uses as much as digits as its factorization.

155251625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30349 (or 30339 counting only the distinct ones).

The product of its digits is 15000, while the sum is 32.

The square root of 155251625 is about 12460.0010032102. The cubic root of 155251625 is about 537.4590558319.

It can be divided in two parts, 1552516 and 25, that multiplied together give a square (38812900 = 6230²).

The spelling of 155251625 in words is "one hundred fifty-five million, two hundred fifty-one thousand, six hundred twenty-five".