61825149 has 6 divisors (see below), whose sum is σ = 89303006. Its totient is φ = 41216760.

The previous prime is 61825139. The next prime is 61825151. The reversal of 61825149 is 94152816.

61825149 is a `hidden beast` number, since 61 + 82 + 514 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60559524 + 1265625 = 7782^2 + 1125^2 .

It is not a de Polignac number, because 61825149 - 2⁵ = 61825117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61825109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3434722 + ... + 3434739.

Almost surely, 2^61825149 is an apocalyptic number.

It is an amenable number.

61825149 is a deficient number, since it is larger than the sum of its proper divisors (27477857).

61825149 is a wasteful number, since it uses less digits than its factorization.

61825149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6869467 (or 6869464 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 61825149 is about 7862.8969852084. The cubic root of 61825149 is about 395.4167454375.

The spelling of 61825149 in words is "sixty-one million, eight hundred twenty-five thousand, one hundred forty-nine".