61625151 has 48 divisors (see below), whose sum is σ = 110675200. Its totient is φ = 33106320.

The previous prime is 61625143. The next prime is 61625159. The reversal of 61625151 is 15152616.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61625143) and next prime (61625159).

It is not a de Polignac number, because 61625151 - 2³ = 61625143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61625159) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 470356 + ... + 470486.

Almost surely, 2^61625151 is an apocalyptic number.

61625151 is a deficient number, since it is larger than the sum of its proper divisors (49050049).

61625151 is a wasteful number, since it uses less digits than its factorization.

61625151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 160 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 61625151 is about 7850.1688516872. The cubic root of 61625151 is about 394.9899073424.

Adding to 61625151 its reverse (15152616), we get a palindrome (76777767).

It can be divided in two parts, 61625 and 151, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 61625151 in words is "sixty-one million, six hundred twenty-five thousand, one hundred fifty-one".