1125400245 has 16 divisors (see below), whose sum is σ = 1862732160. Its totient is φ = 579516224.

The previous prime is 1125400231. The next prime is 1125400247. The reversal of 1125400245 is 5420045211.

It is a cyclic number.

It is not a de Polignac number, because 1125400245 - 2⁶ = 1125400181 is a prime.

It is a super-2 number, since 2×1125400245² = 2533051422892120050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125400247) 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, 1293129 + ... + 1293998.

It is an arithmetic number, because the mean of its divisors is an integer number (116420760).

Almost surely, 2^1125400245 is an apocalyptic number.

1125400245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1125400245 is a deficient number, since it is larger than the sum of its proper divisors (737331915).

1125400245 is a wasteful number, since it uses less digits than its factorization.

1125400245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587164.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1125400245 is about 33546.9856320952. The cubic root of 1125400245 is about 1040.1652366277.

Adding to 1125400245 its reverse (5420045211), we get a palindrome (6545445456).

The spelling of 1125400245 in words is "one billion, one hundred twenty-five million, four hundred thousand, two hundred forty-five".