162135025 has 24 divisors (see below), whose sum is σ = 217414904. Its totient is φ = 119232000.

The previous prime is 162135019. The next prime is 162135031. The reversal of 162135025 is 520531261.

It is an interprime number because it is at equal distance from previous prime (162135019) and next prime (162135031).

It can be written as a sum of positive squares in 12 ways, for example, as 130965136 + 31169889 = 11444^2 + 5583^2 .

It is not a de Polignac number, because 162135025 - 2⁹ = 162134513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89125 + ... + 90925.

Almost surely, 2^162135025 is an apocalyptic number.

It is an amenable number.

162135025 is a deficient number, since it is larger than the sum of its proper divisors (55279879).

162135025 is a wasteful number, since it uses less digits than its factorization.

162135025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101 (or 2096 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 162135025 is about 12733.2252395063. The cubic root of 162135025 is about 545.2875905486.

162135025 divided by its sum of digits (25) gives a triangular number (6485401 = T₃₆₀₁).

Adding to 162135025 its reverse (520531261), we get a palindrome (682666286).

The spelling of 162135025 in words is "one hundred sixty-two million, one hundred thirty-five thousand, twenty-five".