1147749725 has 12 divisors (see below), whose sum is σ = 1425174036. Its totient is φ = 916932480.

The previous prime is 1147749697. The next prime is 1147749737. The reversal of 1147749725 is 5279477411.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 98596 + 1147651129 = 314^2 + 33877^2 .

It is not a de Polignac number, because 1147749725 - 2¹² = 1147745629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1147749725.

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, 12992 + ... + 49641.

It is an arithmetic number, because the mean of its divisors is an integer number (118764503).

Almost surely, 2^1147749725 is an apocalyptic number.

It is an amenable number.

1147749725 is a deficient number, since it is larger than the sum of its proper divisors (277424311).

1147749725 is an equidigital number, since it uses as much as digits as its factorization.

1147749725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63376 (or 63371 counting only the distinct ones).

The product of its digits is 493920, while the sum is 47.

The square root of 1147749725 is about 33878.4551743435. The cubic root of 1147749725 is about 1047.0057476559.

The spelling of 1147749725 in words is "one billion, one hundred forty-seven million, seven hundred forty-nine thousand, seven hundred twenty-five".