161214525 has 72 divisors (see below), whose sum is σ = 311373920. Its totient is φ = 79470720.

The previous prime is 161214523. The next prime is 161214551. The reversal of 161214525 is 525412161.

161214525 is a `hidden beast` number, since 1 + 612 + 1 + 45 + 2 + 5 = 666.

It is not a de Polignac number, because 161214525 - 2¹ = 161214523 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161214523) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 183387 + ... + 184263.

Almost surely, 2^161214525 is an apocalyptic number.

161214525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161214525 is a deficient number, since it is larger than the sum of its proper divisors (150159395).

161214525 is a wasteful number, since it uses less digits than its factorization.

161214525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 947 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 161214525 is about 12697.0281956055. The cubic root of 161214525 is about 544.2536989338.

Adding to 161214525 its reverse (525412161), we get a palindrome (686626686).

The spelling of 161214525 in words is "one hundred sixty-one million, two hundred fourteen thousand, five hundred twenty-five".