1265376552 has 64 divisors (see below), whose sum is σ = 3456207360. Its totient is φ = 382872000.

The previous prime is 1265376547. The next prime is 1265376557. The reversal of 1265376552 is 2556735621.

It is an interprime number because it is at equal distance from previous prime (1265376547) and next prime (1265376557).

It is not an unprimeable number, because it can be changed into a prime (1265376557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192927 + ... + 199377.

It is an arithmetic number, because the mean of its divisors is an integer number (54003240).

Almost surely, 2^1265376552 is an apocalyptic number.

1265376552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265376552 is an abundant number, since it is smaller than the sum of its proper divisors (2190830808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265376552 is a wasteful number, since it uses less digits than its factorization.

1265376552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7214 (or 7210 counting only the distinct ones).

The product of its digits is 378000, while the sum is 42.

The square root of 1265376552 is about 35572.1316763559. The cubic root of 1265376552 is about 1081.6163930450.

The spelling of 1265376552 in words is "one billion, two hundred sixty-five million, three hundred seventy-six thousand, five hundred fifty-two".