1151541225 has 48 divisors (see below), whose sum is σ = 2150179840. Its totient is φ = 604065600.

The previous prime is 1151541217. The next prime is 1151541233. The reversal of 1151541225 is 5221451511.

It is a happy number.

1151541225 is a `hidden beast` number, since 115 + 1 + 541 + 2 + 2 + 5 = 666.

1151541225 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1151541217) and next prime (1151541233).

It is not a de Polignac number, because 1151541225 - 2³ = 1151541217 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27192 + ... + 55158.

Almost surely, 2^1151541225 is an apocalyptic number.

1151541225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1151541225 is a deficient number, since it is larger than the sum of its proper divisors (998638615).

1151541225 is a wasteful number, since it uses less digits than its factorization.

1151541225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28047 (or 28036 counting only the distinct ones).

The product of its digits is 2000, while the sum is 27.

The square root of 1151541225 is about 33934.3664299188. The cubic root of 1151541225 is about 1048.1573805684.

Adding to 1151541225 its reverse (5221451511), we get a palindrome (6372992736).

The spelling of 1151541225 in words is "one billion, one hundred fifty-one million, five hundred forty-one thousand, two hundred twenty-five".