214515725 has 12 divisors (see below), whose sum is σ = 266968404. Its totient is φ = 170987520.

The previous prime is 214515689. The next prime is 214515761. The reversal of 214515725 is 527515412.

It is an interprime number because it is at equal distance from previous prime (214515689) and next prime (214515761).

It can be written as a sum of positive squares in 6 ways, for example, as 946729 + 213568996 = 973^2 + 14614^2 .

It is not a de Polignac number, because 214515725 - 2¹⁸ = 214253581 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 214515691 and 214515700.

It is a congruent 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, 8564 + ... + 22413.

It is an arithmetic number, because the mean of its divisors is an integer number (22247367).

Almost surely, 2^214515725 is an apocalyptic number.

214515725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

214515725 is a deficient number, since it is larger than the sum of its proper divisors (52452679).

214515725 is a wasteful number, since it uses less digits than its factorization.

214515725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31264 (or 31259 counting only the distinct ones).

The product of its digits is 14000, while the sum is 32.

The square root of 214515725 is about 14646.3553486866. The cubic root of 214515725 is about 598.6225112577.

The spelling of 214515725 in words is "two hundred fourteen million, five hundred fifteen thousand, seven hundred twenty-five".